Enameling-dredger.



L. LIPP. BNAMELING DREDGER. APPLICATION FILED MAB.13, 1914.

Patented July 14, 1914.

had to the accompanying drawings,

" UNITED LOUIS LIPP, OF ST. BERNARD, OHIO.

ENAMELING-DREDGER.

Application filed March 13; 1914.

To all whom it may concern Be it known that I, LOUIS LIPP, a citizen of the United States, and a resident of St. Bernard, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Enameling- Dredgers, of which the following is a full, clear, and exact description, reference being forming part of this specification.

In the art of covering with a coat of enamel sanitary ware of various kinds, particularly bath tubs, it is customary to use a dredger for sprinkling the enamel powder on the ware, which consists in a sieve or sifter on a long handle and means for tapping the dredger, either by hand or by a pneumatic hammer.

This invention relates to dredgers having a pneumatic hammer, and has as its object the avoiding of difficulties of the past, in wear of parts, inconvenience of handling and operation and ineiiicient operation due to an uneven and uncontrolled flow of powder through the sieve.

The object is accomplished by that certain construction and arrangement of parts to be hereinafter specifically pointed out and claimed.

In the drawings, Figure 1 is a side elevation of the dredger complete, partly in section. Fig. 2 is a top plan view of the same. Fig. 3 is a central vertical section through the pneumatic hammer. Fig. 4 is an enlarged sectional view showing the air outlet and the closed and open port-ions of the handle.

The sieve or sifter consists of a metallic band 1, with a bottom 2 of screening, and a socket piece 3 on the band into which is screwed the solid end 4 of the pipe which serves as a handle for the'sieve. A sleeve 5 having a bolt 6 is mounted on this solid end .4 of the pipe, and a chain 7 is mounted on the bolt, whereby the dredger may be supported to relieve the operator from the holding up of the parts when working.

The other end 8 of screwthreaded into a extends an air pipe 9 the p1pe is hollow and sleeve 10, from which to provide passage for compressed air from the interior of the pipe to the pneumatic hammer. Just beyond this outlet pipe 9 is the solid pipe portion 4, which also screws into this sleeve 10.

The solid portion has mounted on it a Specification of Letters Patent.

Patented July 14, 1914:. SerialNo. 824,378.

sleeve 11, adjustable on the pipe and clamped thereon by the bolt 12. On an outwardly extending lug 13 on this sleeve is clamped the casing 14 of a pneumatic hammer by means of a bifurcated base portion 15 for the casing and a bolt 16. This connection must be very tight and secure because the hammer 17 strikes on the casing 14:, within which it is located and hence imparts vibratory movement to the dredger, through this connection.

The pneumatic hammer is provided with an air inlet pipe 18 to which a hose or tube 19 is secured, and the other end of the hose is secured over the end of the pipe 9. The connection from the air line is made through a hose 20 secured to the end of the hollow pipe portion 8. Between this point and the outlet 9 there is a valve 21 the plunger 22 of which is raised by a finger pinch lever 23.

The great necessity which led to the use of the pneumatic hammer dredger was the necessity of having a smooth and even flow of enamel powder through the sieve. I have found that it is not requisite to have the pneumatic hammer work directly on the sieve itself, but that if its vibrations are carried through a solid pipe portion, then even better results are obtained. The hammer does not strike directly on the pipe, however, to wear it out, but strikes upon its own casing as described. The hammer must be well forward toward the sieve end, however, to get correct vibration, and it is made adjustable as described because the exact point where best action on the sieve is had can then be determined by experiment when the tool is put into use. Even though the hammer is well forward along the handle or pipe, there is no bothersome hose in the way of the workman. to connect the hammer with the pressure line. The use of a hollow pipe as a handle does away with this. This use of a hollow pipe also allows of the locating of the valve at a convenient point for the operator, and on a solid and secure foundation such as a valve on a hose could not have. The workman is thus able to regulate the valve easily and efliciently, so that finer and more delicate work can be done with this dredger than with the dredgers of the past.

Having thus described my invention, I claim as new and desire to secure by ters Patent, is

A dredger comprising a sieve, a pneumatic what Letm1ttingoompressed-air to. thmhammer, a a pressure line and means for'mounting the handle for the sieve comprising a solidpor- 'valve in said hollow portion.

hammer to. gitatethe same;- a-valve for ad-; videdwith connections tothe hammer and to tion and a hollow portion, means for adjust Y I p 7 LOUIS LIPP. ably mountin the hammer on the solid por- Attest:

tion,.means or mounting the sieveion'ithe 1 HELEN L. AIoHHoLz,

solid portion, with the hollow portion pro- EARL W. GRIFFIN.

Copies of this patent may bq optainodior. fivepqents .each byaddressingthe Commissioner of Patents, Washington, D. 0. 

